Paper-machine



2 SheetsShe.et 1.

(No Model.)

V. G. HAZARD.

PAPER MACHINE.

2 Sheets-Sheet 2.

(No Model.)

vyGnHAZARD.

PAPER MACHINE.

Patented Feb. 26. 1889-.

STATES VINCENT G. HAZARD, F l/VILllIINGTON, DELAWARE.

PAPER-MACHINE.

SPECIFICATION forming part of Letters Patent No. 398,394, dated February 26, 1889.

Application filed March 20, 1888. Serial No. 267,806. (No model.)

To all 1072,0771, it may concern:

Be it known that I, VINCENT G. HAZARD, of lVilmington, county of New Castle, State of Delaware, have invented a new and useful Improvement in Paper-Machines, of which the following is a true and exact description, reference being had to the accompanying drawings, which form a part of this specification.

My invention relates to the housings of the press-rolls in a paper-machine, and has for its object to simplify this part of the machine,

7 to render the removal and adjustment of the press-rolls easier, and, generally, to increase the efficiency of said rolls. I

As heretofore constructed the upper pressrolls have in general practice been supportedand guided in vertical bearings situated above the pedestal of the lower rolls and permamanently secured to the framing, the housing used being for the most part formed like the letter C or the letter U, the lower roll being journaled in the bottom loop,while the upper one had its journal-boxes secured in guides at each side of the upper loop of the C or of the upright arms of the U. In this construction the weight-rods are secured to saddles passing over the journals of the upper rolls, and the structure and its connections as a whole are such as to make it troublesome and difficult to remove or adjust the rolls and felts. It has been usual to secure the upper roll of what are known as the couch-rolls in bearin gs formed in the ends of pivoted arms, and it has been, I am aware, suggested to secure the upper press-roll to the frame by a similar arrangement.

My invention relates to this last-mentioned means for supportin the upper press-roll, and has for its object to generally improve the character of such mechanism and provide coacting devices by which it will be fitted for the exigencies of practical use.

The nature of my improvements will be best understood after an explanation of the drawings in which they are illustrated, and the novel features are hereinafter clearly pointed out in the claims, reference being now had to the drawings which illustrate my invention, and in which- Figure 1 is a side elevation of my improved press-roll housings andattachments; Fig. 2, a

plan view on the line It at of Fig. 1; Fig. 3, an outline drawing of those portions of a papermachine to which my invention is applicable; and Fig. 4 is a section through one of the pedestals of the lower rolls and through the frame of the machine on the line y y of Fig. 1.

A is the frame of the machine; B, the pedestal supporting one end of the lower pressrolls. A similar one 011 the other side of the machine (not shown in the drawings) supports the other journal of the roll. At the bottom of the pedestal I provide it with a projection, Z), preferably cylindrical, which fits into a hole, a, in the frame A.

C C are upright standards secured to the frame A of the machine in any convenient way, preferably by bolts 0 as shown. By forming supplementary bolt-holes 0/2 in the edge of the frame A, I am enabled to adjust the standards longitudinally with respect to the pedestals B of the lower rolls. Thus the standards, as now shown in Fig. l, are secured in bolt-holes a", but can be moved back and the bolts inserted in the holes Q2.

0 c are pivot-pins extending through the standards C, and 6 (see Fig. 1) represents a crotch formed in the top of each of the standards C, the purpose of which will be hereinafter explained.

D D are the pivoted arms on which I sup port the upperpress-rolls. They are secured to the standards 0 by means of the pivot-pins c, and are preferably made double, as shown in Fig. 2.

D is a removable bearing-plate secured 'to the end of the arm D by bolts (1 and formed so as to serve, together with the end of the arm D, as the j ournal-box bearing for the upper press-roll. A bracket, D can be cast or attached to the box-bearing D to serve as a support for the bearings of rolls or other de vices used in connection with the press-rolls and heretofore attached to the Q-shaped housings in which such rolls have usually been secured.

(l is a lug projecting from the box-bearing D, to which the weight-links are attached.

E E are lifting-rods provided with screwthreads 6 at their upper ends and pivoted at their lower ends on pins c running through the arms D.

' the felt, K.

F is a sleeve provided with trunnions f, which rest in the crotches c at the'top of the standards 0.

G is a hand-wheel attached to a nut, g, which meshes with the threaded end 6 of the lifting-rods E, and rests against the sleeve F, through which. rod E passes.

H H are the weight-rods connected with the lug d and with each other, as shown.

H is a weighted lever to which the rod or link H is connected, and the short end of which is pivoted at h on the frame of the machine.

]L2 is an adjustable weight secured on the long end of lever H I is the lower press-roll, "L indicating the covering of soft rubber with which it is sometimes provided.

J is the upper press-roll.

K is the endless felt apron which runs between the rolls I and J. 7a k, &c., are the bearing-rolls on which this apron runs.

The dotted line marked L represents the paper, showing its course through the machine, Z Z, &c., being the guide-rolls on which the paper runs.

The press-rolls represented in Fig. 1 are the second of the two sets of press-rolls used in the machine, the first being shown in Fig. 3 and marked 1 and J. The endless felt running between these latter rolls is indicated by the letter K, and its hearing-rolls by k k, &c.

M, Fig. 3, indicates the drying-cylinders, to which the paper passes after leaving the press-rolls, and N in the same figure is a takeup device for maintaining proper tension on K Fig. 1,indicates a driving-belt by which motion is eonnnunicated to the roll 7J supported on the bracket D and over which the paper passes on its way to the drying-cylinders M.

It will of course be understood that the attachments shown and described in connection with Fig. 1 are duplicated for each set of press-rolls. I have found that the alignment and accurate adjustment of the upper pressroll are rendered easier and more certain by securin git in the ends of the pivoted arms D, whose bearin on the turned pins 0 have practically no tendency to wear or get out of alignment. 7

When it is desired to elevate the upper press-roll, J, it is only necessary to turn the hand-wheels G, which will draw up the rods 11 lifting the arms D, which carry the said roll. To remove the upper press-roll, it is only necessary to unscrew the bolts (1, which secure the box-bearing D in place, and to remove the lower roll, it is only necessary to elevate the roll J, which being done, the roll can be removed, as can also the pedestals B, in which the lower rolls are journaled, said pedestals being only secured to the frame by the projections l) entering the holes a.

By making the projection 1) round or cy lindrical and fitting it into a hole, a, of similar form I am enabled to remove and replace the roll I on the pedestals "iwith greater ease and less danger of injury than it the pedes- 1 tals were secured in line as well as in position by the insertion of their projections 11 in the holes a.

Thus, in lifting one end of roll I, if the opposite pedestal were fixed, the journal of the roll would jam unless the upward motion were absolutely vertical, while by leaving the pedestals free to turn in the round holes a this trouble is entirely overcome.

It will be at once noticed that the removal of either roll or the removal of the lower pedestals can be readily effected and requires the taking down of but few parts; and it will be obvious that by my construction the felts can be removed and replaced with great ease.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In combination with the frame of a paper-machine having holes a formed in its upper face to receive the pedestals of the lower roll, removable pedestals B for the lower rolls, provided with projections b, formed to fit in the holes a of the frame, standards situated on the frame on one side and at each end of the press-rolls, arms D, pivoted at one end to said standards and having journal-bearings at their outer ends, and press-rolls journaled on the pedestals and in the journal-bearings of the arms D, all substantially as and for the purpose specified.

2. In combination with the press-rolls of a paper-machine, standards 0, situated at each end and to one side of the rolls, arms pivoted at one end to said standards, journalbearings for the upper roll secured at the other ends of said pivoted arms, lifting rods E, secured to said pivoted arms at one end and threaded at their other ends, nuts 9, with hand-wheels G, screwing into said threaded ends of the lifting-rods, and supporting-shoulders on the upper ends of the standards C to hold the nuts 9 stationary, all substantially as and for the purpose specified.

3. In a device for supporting and adjusting the upper press-roll of a paper-machine, substantially as shown and described, standards C, situated at each end and to one side of the rolls, incombination with crotches 6, formed in the top of said standards, double arms D, pivoted on both sides of the standards and having j ournal-bearings for the upper roll formed in their outer ends, lifting rods E, pivoted at their lower ends to arms D and having a screw-thread formed on their upper ends, sleeves F, having trunnions f f, resting in the crotches c of the standards, and nuts g, having hand-wheels G, screwing onto the threaded ends of rods E and resting on the sleeve F, all substantially as and for the purpose specified.

i. In a device for supporting and adj usting-plate, and the weight-rods and lever, said ing the upper press-roll of a paper-machine, rods being secured to the lug d, all substan- 10 substantially as shown and described, the tially as and or the purpose specified. combination oi the standards 0, arms D, piv- VINCENT G HAZARD 5 oted to the standards at one end, ournalbearings for the upper roll at the outer end \Vitnesses: of said arms, the removable bearing-plate D, J. ARCHIE TAYLOR, lugs d, and brackets D attached to said bear- JOHN H. NEUTZE. 

